Description of problem:
Latest version 1.5.0.9-2 of Firefox made some webpages unreadable. I don't know
the reason.
You can find examples of unreadable pages from the articles in the following
websites:
http://www.apogeonline.comhttp://punto-informatico.it
This bug in 1.5.0.9-2 made me downgrade to version 1.5.0.9-1 which does not
present such problems.
Version-Release number of selected component (if applicable):
1.5.0.9-2
How reproducible:
Always, on some websites

Same here. Many links start with the right letter and then they all end with a
bunch of _ (right lenght from the original. source html is right.)
FF Plugins I am running:
Adblock Plus
CuteMenus
Distrust
Fasterfox
Firefox Showcase
Habari Xenu
Rikaichan
Leet Key
NoScript
PrefBar
Web Developer
Permit Cookies

I can confirm this on linux FC6.
I see it on the front page of www.slate.com.
Following comment #2 I unset MOZ_DISABLE_PANGO (which I had set to 1 for speed
on my 900MhZ laptop)and the problem went away. So it is related to disabling
pango. I see there is a pango update in updates-testing. Should I try that?